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Date:      Fri, 22 Jun 2001 14:02:42 +0100
From:      Nik Clayton <nik@freebsd.org>
To:        j mckitrick <jcm@FreeBSD-uk.eu.org>
Cc:        Mike Meyer <mwm@mired.org>, Michael Lucas <mwlucas@blackhelicopters.org>, Dag-Erling Smorgrav <des@ofug.org>, freebsd-chat@FreeBSD.ORG
Subject:   Re: most complex code in BSD?
Message-ID:  <20010622140242.R8380@clan.nothing-going-on.org>
In-Reply-To: <20010622133911.A53884@dogma.freebsd-uk.eu.org>; from jcm@FreeBSD-uk.eu.org on Fri, Jun 22, 2001 at 01:39:12PM %2B0100
References:  <20010621233210.A37804@dogma.freebsd-uk.eu.org> <xzp7ky5e4ua.fsf@flood.ping.uio.no> <20010622062238.A45123@blackhelicopters.org> <20010622114548.A51977@dogma.freebsd-uk.eu.org> <15155.13183.377957.392221@guru.mired.org> <20010622133911.A53884@dogma.freebsd-uk.eu.org>

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On Fri, Jun 22, 2001 at 01:39:12PM +0100, j mckitrick wrote:
> | For the v6 kernel, this is in C code. I never went looking for it in
> | later code, so I don't know when it vanished.
>=20
> I'm sorry, but what is v6?
>=20
> | The comment in question is a couple of paragraphs, followed by that
> | seven-word note. If I remember correctly - my copy of Lyons being in
> | storage - the code was the context-switching code, and what was being
> | explained was the mechanism that was used to start the first process,
> | which involved very machine-dependent work so that that code would do
> | the job.
>=20
> Is this code gone, then?  Which source files contain this routine in Free=
BSD
> now?

See

    http://cm.bell-labs.com/cm/cs/who/dmr/odd.html

A quick check through the FreeBSD source shows homage in
src/boot/pc98/boot2/io.c, sys/i386/boot/biosboot/io.c,
sys/pc98/boot/biosboot/io.c, and sys/pci/ncr.c.

N
--=20
FreeBSD: The Power to Serve             http://www.freebsd.org/
FreeBSD Documentation Project           http://www.freebsd.org/docproj/

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